Telefonica Deutschland upbeat outlook lifts shares

* Q4 loss of 46 mln euros vs 47 mln euro loss expected

* Sees 250 mln euros in benefits from E-Plus in 2015

* Sees 2015 earnings up by more than 10 pct

* Shares (Frankfurt: DI6.F - news) jump 5.5 percent (Adds analyst comment, shares)

By Harro Ten Wolde

FRANKFURT, Feb 24 (Reuters) - Telefonica Deutschland forecast core profit would increase by 10 percent this year, with the benefits of its purchase of mobile operator E-Plus for 8.6 billion euros ($9.7 billion) starting to feed through.

The company, now Germany's biggest mobile carrier by customers, said it would achieve about 30 percent of its five-year savings target this year.

Telefonica Deutschland shares jumped in early trading and by 0930 GMT were up 5.5 percent at 5.03 euros, the second-biggest gainer in a flat German technology index.

"The detailed 2015 guidance is welcome and underpins an overall confident tone," Jefferies analysts wrote in a note.

Telefonica Deutschland, which is controlled by Spain's Telefonica, bought E-Plus from Dutch peer KPN last year.

The company swung to a fourth-quarter operating loss before depreciation and amortisation (OIBDA) of 46 million euros, down from a 373 million profit in the previous year, as integration costs weighed.

That was broadly in line with the mean forecast for a 47 million euro loss in a Reuters poll..

The company said it expects 2015 OIBDA to increase by more than 10 percent from a pro-forma base of 1.46 billion euros, including E-Plus and excluding special items.

It is in the process of cutting 18 percent of full-time jobs to help to achieve cost savings from the takeover.

It expects to generate 250 million euros in operating cash flow synergies this year from the acquisition, of the 800 million Telefonica Deutschland forecasts after five years, the company said.

Deutsche Telekom (LSE: 0MPH.L - news) , Germany's biggest telecoms operator including its huge fixed-line network, is due to report fourth-quarter results on Thursday. ($1 = 0.8835 euros) (Reporting by Harro ten Wolde; Editing by Keith Weir)